Compact precooler and cooling process
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United States of America Patent
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Mar 15, 2005
Grant Date -
Oct 2, 2003
app pub date -
Feb 5, 2003
filing date -
Dec 15, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
In a hydrocarbon fueled reformed gas fuel cell system having a rated power, a process for cooling reformed gas from a fuel processor prior to feeding the reformed gas to a shift converter includes the steps of providing a cooling zone having a hot gas inlet, a cooled gas outlet and a water inlet, feeding the reformed gas at a temperature of between 600 to 900.degree. F. to the hot gas inlet, redirecting the reformed gas in the cooling zone so as to provide a swirling recirculating flow of the reformed gas in the cooling zone, atomizing water into droplets and contacting the droplets with the redirected reformed gas so as to cool the reformed gas and vaporize the water, and removing a stream of cooled reformed gas from the cooling zone wherein the reformed gas is at a temperature between 400 to 500.degree. F. and the stream is substantially free of water droplets.
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